Same thing happened out on a trail in my kx250. Kicking nor push starting it would work. Even tried a friends extra plug for his cr250 which was similar but not the right one. Still did not start. So we towed it several miles through rocky trails back to the parking lot. I dropped in a new plug that I had in the car and she fired right up.
Definitely give a new plug a try.
Definitely give a new plug a try.
